CN2200862Y

CN2200862Y - Double four-bar linkage separately-adjusting transmission mechanism for switch

Info

Publication number: CN2200862Y
Application number: CN 94219484
Authority: CN
Inventors: 陈沈南
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-08-22
Filing date: 1994-08-22
Publication date: 1995-06-14
Anticipated expiration: 2004-08-22

Abstract

A dual-four-bar separately-adjustable transmission mechanism for switch is composed of two groups of four-bar linkage consisting of ABCD and DCEF, one end of said four-bar linkage is linked to big axle of switch, another end of said four-bar linkage is linked to AG to form an angle steel body, and G is hinged to moving contact. Adjusting the length of BC to realize the adjustment of the opening distance L; and the contact stroke L is adjusted by adjusting the shrinkage of the pressure spring. The utility model can respectively adjust the distance L and the contact stroke L without influencing each other and can accurately meet the technical requirements; and the switch large shaft can hardly have load when being in a stable state, and the stability of the electrical and mechanical parameters of the whole machine is ensured.

Description

Double four-connecting-rod separated regulate transmission structure for switch

The utility model relates to electrical switch transmission mechanism, particularly high voltage switch transmission mechanism.

Existing high voltage electrical switch transmission mechanism all adopts one group of quadric chain to realize " the leading to " and " breaking " of electric current in the circuit, this transmission mechanism as shown in Figure 4, form by A ' B ' D ' F ', connecting rod B ' D ' is connected firmly for two sections by B ' C ' and C ' D ', B ' C ' is formed by connecting by bolt by two sections again usually, and the length of B ' C ' can be regulated by bolt; The length of C ' D ' section, shunk by stage clip and change, the branch brake clearance of dynamic and static contact is adjusted in formation with the functional relation of " opening distance=total kilometres-contacting travel ", and the contact pressure after closing a floodgate, this adjustment will be passed through repeated measurement, debugging, comparison, dismounting, regulate relevant parts, can reach specification requirement, and the minimal adjustment precision is 1/2nd of a pitch.

The purpose of this utility model provides a kind of pair of four link type transmission mechanism, the first, make switch open distance and two major parameters of contacting travel can be adjusted respectively, and reach the predetermined technique requirement independently; The second, make the switch macro-axis only close a floodgate or separating brake moment the load that is hit, and when stable state except that the moment of torsion that is subjected to very little sluice separating spring generation, almost do not have other load.

Fig. 1 has drawn structure principle chart of the present utility model under the gate-dividing state, form two four link type transmission mechanisms by ABCD and DCEF, the BC section is with prior art B ' C ', its length, can regulate by bolt (because of same with prior art, so do not draw in detail in the drawings), be positioned on the moving bar 5 at connecting rod CD(, C ' D ' is identical with prior art) D end system one slotted hole, wear in the hole with steady pin, D point and steady pin coordination, this steady pin passes and is packed in two roller centers, be hinged with fixed support simultaneously, roller is pushed down spring abutment, and spring abutment withstands on the stage clip, compression spring sleeve is contained on the CD bar, the other end of stage clip is equipped with adjustable spring abutment, and adjustable spring abutment is contained on the CD bar by screw thread, regulates adjustable spring abutment, can change from the position on the CD bar, also promptly change the initial pressure of stage clip; The macro-axis of electric switch is connected with two four connecting rods, one termination connecting rod EF, and macro-axis center and fixed support are hinged; Another termination connecting rod AB of two four connecting rods and AG constitute the rigid body that is an angle, are hinged at A place and fixed support, and at the moving contact hinge of G place and switch, fixed contact is connected on the fixed support, opening between dynamic and static contact apart from being L, and L can regulate by the bolt on the BC.Fig. 3 is the structure principle chart under the utility model combined floodgate done state, and it is contacting travel that the D of connecting rod CD holds relative slotted hole translocation distance L on one side.

The utility model compared with prior art has following characteristics: 1, opening distance and contacting travel can finely tune respectively, is independent of each other; 2, the macro-axis stable state of switch is subjected to load hardly, guarantees that electric, the mechanical parameter of complete machine stablized; 3, dispatch from the factory debugging, maintenance of switch do not need any part of repeated disassembled and assembled, simplifies the operation, and can accurately reach predetermined distance and the contact pressure opened; 4, be convenient to the switch miniaturization, seriation, can be directly used in vacuum circuit-breaker, also can be complementary with multiple electromagnetic operating mechanism, spring operating mechanism, handcart type breakers such as equipped fixed switchgear and KYN2, JYN2, GC2 can also be used for the pottery of multiple different model or the arc control device of glass shell; 5, cost and prior art products are very nearly the same.

Fig. 1 is a structure principle chart under the utility model (three-phase is got and is example mutually) gate-dividing state; Fig. 2 rigidly connects when touching for two contacts in the making process, and connecting rod AB stop motion, DCEF four connecting rods continue C point force analysis figure under the motion state; Fig. 3 is a structure principle chart under the utility model making process done state; Fig. 4 is the single four jointed gear unit principle assumption diagrams of prior art.

Embodiment: Fig. 1 is the utility model (three-phase, get one mutually for example) structure principle chart under the gate-dividing state, form by ABCD and two group of four connecting rod of DCEF, BC is actual two sections, be linked to be (because of same as the prior art with bolt in the middle of it, so carefully do not paint), be positioned on the moving bar 5 at connecting rod CD() D end system one slotted hole, wear in the hole with steady pin 4, D point and steady pin 4 coordinatioies, C, 2 distances of D are certain values before stage clip 2 shrinks, after stage clip 2 stressed contractions, moving bar 5 right shifts (being equivalent to the C point moves to right), the D point is constant, so CD shortens, said fixing pin 4 passes and cuts with scissors and is contained in two rollers 3,3 ' the center (because of 3 and 3 ' parallel, 3 coverings 3 ', so only draw a roller on the figure, and mark 3,3 ' two numbers), be hinged with fixed support simultaneously, roller is pushed down spring abutment 6, and spring abutment 6 withstands on the stage clip 2, and stage clip 2 is sleeved on the connecting rod CD, the other end at stage clip 2 is equipped with adjustable spring abutment 1 by screw thread on connecting rod CD, regulate adjustable spring abutment 1, can change, also promptly changed the initial pressure of stage clip 2 from the position on the CD bar; Switch macro-axis 7 is connected with two four connecting rods, one termination connecting rod EF, and macro-axis center and fixed support are hinged; Another termination connecting rod AB of two four connecting rods and AG constitute the rigid body that is an angle, be hinged at A place and fixed support, moving contact 9 at G place and switch is hinged, fixed contact 8 is connected on the fixed support, opening between dynamic and static contact apart from being L, the connecting bolt of regulating in the middle of the BC can change the length of BC, and then L is diminished or becomes big.Fig. 2 is in the making process, and moving contact 9 rigidly connects when touching with fixed contact 8, connecting rod AB stop motion, and DCEF four connecting rods continue under the motion state, C point force analysis figure.At this moment, 8,9 contacts, connecting rod CB, CD, CE stressing conditions are respectively F shown in polar plot among Fig. 2 _B, F _D, F _EWherein act on component F on the CB bar by the C point _B, pass on the moving contact 9, promote contact 9 on the one hand to the motion of fixed contact 8 directions, up to 8,9 contacts (combined floodgate), on the other hand in 8,9 combined floodgate backs (as shown in Figure 3), for two contacts provide operating pressure.Fig. 3 is a structure principle chart under the utility model combined floodgate done state, at this moment, and 8,9 contacts, connecting rod CE does not stress, BC and CD point-blank, stage clip 2 is pressed to shrink, moving bar 5 moves right, the C point that is connecting rod CD moves to right, and the D point is motionless, so CD shortens, the amount of contraction of stage clip 2 (shortening amount of CD in other words) l is a contacting travel, regulate adjustable spring abutment 1, can change contacting travel l.This shows, regulate l, irrelevant with L; Conversely, regulate L, irrelevant with l.The precision of L and l can transfer to very little, need not disassembling and assembling pin shaft, block card etc.

Claims

1, the two four connecting rod separate-regulatable transmission mechanisms of a kind of switch, it is characterized in that forming by ABCD and two group of four connecting rod of DCEF, BC has two sections, be linked to be by bolt, regulate bolt and can change BC length, at the D of connecting rod CD end system one slotted hole, wear in the hole with steady pin, D point and steady pin coordination, this steady pin passes and is packed in the roller center, be hinged with fixed support simultaneously, roller is pushed down spring abutment, spring abutment withstands on the stage clip, compression spring sleeve is contained on the CD bar, and the other end of stage clip is equipped with adjustable spring abutment, and adjustable spring abutment is contained on the CD bar by screw thread, regulate adjustable spring abutment, can change from the position on the CD bar, also promptly change the initial pressure of stage clip, the macro-axis 7 of electric switch is connected with two four connecting rods, one termination connecting rod EF, the macro-axis center of switch and fixed support are hinged, another termination connecting rod AB of two four connecting rods and AG constitute the rigid body that is an angle, are hinged at A place and fixed support, at moving contact 9 hinges of G place and switch, fixed contact 9 is connected on the fixed support, moving, opening apart from being L between fixed contact regulated the bolt on the BC, can change the size of L, the amount of contraction of stage clip is identical with CD bar amount of movement, be contacting travel L, regulate adjustable spring abutment, can change the size of L.